<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script src="vue.js"></script>
 
</head>
<body>
  <div id="app">
    
    <ul>
      <li v-for="item in json">
        {{item}}
      </li>
    </ul>
    <hr>
    <ul>
      <li v-for="(item,key) in json">
       {{key}} =>  {{item}}
      </li>
    </ul>
    <hr>
    <ul>
      <li v-for="(item,key,index) in json">
       {{key}} => {{index}} =>  {{item}}
      </li>
    </ul>
  </div>
  <script>
    let vm = new Vue({
      el:"#app",
      data:{
        json:{
          name:"小明",
          age:18,
          gender:"男"
        }
      }
     
    })
  </script>
</body>
</html>